Issue with launching Android application via Intents

My problem is thus; I am new to programming on the ANDROID platform and have a 'working' application that piggy-backs on the API-Docs example. I wish it to launch three tabs one containing a list of reports, one 开发者_如何学Pythona form to file a report and the last to show the geo-located reports. It doesn't appear as a separate application, it instead appears as a list to be launched by the API-Docs example. Below is my manifest code...

    <activity android:name=".HelloFlamingos">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.SAMPLE_CODE" />
        </intent-filter>
    </activity>

    <activity android:name=".Controls2" android:label="@string/app_name">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.TAB" />
        </intent-filter>
    </activity>

    <activity android:name=".List1" android:label="@string/app_name">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.TAB" />
        </intent-filter>
    </activity>

    <activity android:name=".ReviewTab" android:label="@string/app_name">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.TAB" />
        </intent-filter>
    </activity>

</application>
<uses-sdk android:minSdkVersion="3" />

HelloFlamingos is the initial page that I wish to be displayed, I realise that the intents for this are wrong, have thought about using category: VIEWS, action: DEFAULT, however is seemingly unwilling to work. Thanks!

In what context is the activity started? If you're looking to have the HelloFlamingos activity the first displayed from the Android OS, you should change its category in the manifest to category.LAUNCHER.

If you're looking to start the activity from elsewhere in your app, create an Intent which matches what you've specified (category.SAMPLE_CODE) and use startActivity or startActivityForResult.